SILL
| Acronym | Definition |
|---|---|
| SILL | Southern Illinois |
| SILL | Standard Internet Leased Line |
| SILL | Strategy Inventory for Language Learning (survey) |
| SILL | Sarasota Institute of Lifetime Learning (est. 1972; Sarasota, FL) |
| SILL | Smart Integrated Lower Limb (prosthetics) |